Further minor cleanups to UNIX domain sockets:

- Staticize and locally prototype functions uipc_ctloutput(), unp_dispose(),
  unp_init(), and unp_externalize(), none of which have been required
  outside of uipc_usrreq.c since uipc_proto.c was removed.
- Remove stale prototype for uipc_usrreq(), which has not existed in the
  code since 1997
- Forward declare and staticize uipc_usrreqs structure in uipc_usrreq.c and
  not un.h.
- Comment on why uipc_connect2() is still non-static -- it is used directly
  by fifofs.
- Remove stale comments, tidy up whitespace.

MFC after:	3 days (where applicable)

1 files changed, 1 insertions, 10 deletions

diff --git a/sys/sys/un.h b/sys/sys/un.h
index 97aebb5..1452c33 100644
--- a/sys/sys/un.h
+++ b/sys/sys/un.h
@@ -58,18 +58,9 @@ struct sockaddr_un {
 #define	LOCAL_CONNWAIT		0x004	/* connects block until accepted */
 
 #ifdef _KERNEL
-struct mbuf;
-struct socket;
-struct sockopt;
 
+struct socket;
 int	uipc_connect2(struct socket *so1, struct socket *so2);
-int	uipc_ctloutput(struct socket *so, struct sockopt *sopt);
-int	uipc_usrreq(struct socket *so, int req, struct mbuf *m,
-		struct mbuf *nam, struct mbuf *control);
-void	unp_dispose(struct mbuf *m);
-int	unp_externalize(struct mbuf *mbuf, struct mbuf **controlp);
-void	unp_init(void);
-extern	struct pr_usrreqs uipc_usrreqs;
 
 #else /* !_KERNEL */